<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="keyword" @keyup.enter="todoadd" />
  </div>
</template>

<script>
import { nanoid } from 'nanoid'
export default {
  name: 'Hearder',
  props: ['updataAdd'],
  data() {
    return {
      keyword: '' //初始数据为空
    }
  },
  methods: {
    todoadd(e) {
      if (this.keyword.trim()) {
        // 准备一个空对象
        let obj = { id: nanoid(), title: e.target.value, done: false }
        // 联系父级组件,添加数据
        this.updataAdd(obj);
      } else {
        alert('输点东西啊老弟')
      }
      // 输入完成之后将输入框置为空
      this.keyword = ''
    }
  },
}
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>